Thursday, September 25, 2008

Network Card Configuration


IRQ: a unique setting that requests service from the processor.
IRQ #
Common Use
I/O Address
IRQ 1
Keyboard

IRQ 2(9)
Video Card

IRQ 3
Com2, Com4
2F0 to 2FF
IRQ 4
Com1, Com3
3F0 to 3FF
IRQ 5
Available (Normally LPT2 or sound card )

IRQ 6
Floppy Disk Controller

IRQ 7
Parallel Port (LPT1)

IRQ 8
Real-time clock

IRQ 9
Redirected IRQ2
370 - 37F
IRQ 10
Available (maybe primary SCSI controller)

IRQ 11
Available (maybe secondary SCSI controller)

IRQ 12
PS/2 Mouse

IRQ 13
Math Coprocessor

IRQ 14
Primary Hard Disk Controller

IRQ 15
Available (maybe secondary hard disk controller)

Network Adapter Cards

The role of the network Adapter card it to:
Prepare data from the computer for the network cable
Send the data to another computer
Control the flow of data between the computer and the cabling system
NIC's contain hardware and firmware (software routines in ROM) programming that implements the
Logical Link Control and
Media Access Control
functions of the Data Link layer of the OSI
Preparing Data
data moves along paths in the computer called a BUS - can be 8, 16, 32 bits wide.
on network cable, data must travel in a single bit stream in what's called a serial transmission (b/c on bit follows the next).
The transceiver is the component responsible for translating parallel (8, 16, 32-bit wide) into a 1 bit wide serial path.
A unique network address or MAC address is coded into chips in the card
card uses DMA (Direct Memory Access) where the computer assigns memory space to the NIC
if the the card can't move data fast enough, the card's buffer RAM holds it temporarily during transmission or reception of data
Sending and Controlling Data
The NICs of the two computers exchanging data agree on the following:
Maximum size of the groups of data being sent
The amount of data to be sent before confirmation
The time intervals between send data chunks
The amount of time to wait before confirmation is sent
How much data each card can hold before it overflows
The speed of the data transmission

Thursday, June 19, 2008

MCSE on Microsoft Windows 2000 Server Certification Requirements

Exam retirements: Many of the exams in this certification track retired in March 2008. You must fulfill all listed requirements to earn the credential. The credential will not expire.

Learn about retired exams and those scheduled for retirement
The Microsoft Certified Systems Engineer (MCSE) on Microsoft Windows 2000 Server certification is designed for IT professionals working in the typically complex computing environment of medium-sized to large organizations.

Wednesday, August 15, 2007

AllegroSurf

AllegroSurf combines Internet connection sharing with content filtering and network resource management into one package. AllegroSurf has been used on home, school and office networks for parental control, bandwidth control, and remote access support

Ositis WinProxy

P2P: How Peer-to-Peer Technology Is Revolutionizing the Way We Do Business

Targeting "managers, executives, and entrepreneurs," this book argues that P2P is "revolutionary." Although a dubious claim, the author does a good job of separating hype from reality, pulling in case studies and technology details to illustrate issues involved with P2P in a business context. The book covers collaboration and workflow, resource utilization, and supercomputing applications of P2P.

Peer-to-Peer: Building Secure, Scalable, and Manageable Networks

This book focuses on what you as a software developer need to know to actually build a P2P system. Along the way, it explores important technical considerations of P2P including naming/addressing and security on the Internet. The authors focus on collaboration and music and video applications of P2P. They also touch on key considerations for the future of P2P in business.